:root {
  font-size: 16px;
  color: #484848;
  word-break: keep-all;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  color: #494443;
}
.nav-left span,
.nav-right span{
  font-size: 14px;
}
header,
footer {
  min-width: 1024px;
}
button {
  background-color: #fff;
  border: none;
}
.main-left-head a{
  text-decoration: none;
  font-weight: 500;
  font-size: 18px;
  color:#37b5b9
}
.nav-right span{
  color: orange;
}
.dis-f {
  display: flex;
  flex-wrap: nowrap;
}

.dis-ib {
  display: inline-block;
}

.flip-y {
  transform: rotate(180deg);
}

ul {
  list-style: none;
}

.logo {
  background-color: #18bfbf;
  height: 70px;
  display: flex;
  justify-content: center;
  align-items: center;
}

.logo img {
  height: 80%;
  display: block;
}
nav{
  background-color: #f3eff3;

}
.nav {
  display: flex;
  max-width: 60%;
  min-width: 960px;
  margin: 0 auto;
  align-items: center;
  justify-content: space-between;
  background-color: #f3eff3;
}

.nav-left,
.nav-right {
  display: flex;
}

.nav-left img,
.nav-right img {
  padding: 0 8px;
}

.nav-mid span {
  display: inline-block;
  font-size: 1.2rem;
  padding: 10px 25px;
}

main {
  max-width: 60%;
  min-width: 960px;
  margin: 20px auto;
  display: flex;
}

.main-left{
  flex:1;
  background-color: #F0F0F0;
}
.main-right{
  flex: 4;
  margin-left: 10px;
  background-color: #F0F0F0;
}

.main-left-head{
  height: 50px;
  color: #52CCCC;
  line-height: 50px;
  text-align: center;
  border-left: 4px solid #18BFBF;
}

.tabs {
  margin:0 25px 25px 25px;
}
.tabs div:first-child{
  font-weight: bold;
}
.tabs div{
  margin: 4px 5px;
  cursor: pointer;
}
.tabs div:not(:first-child){

  border: 3px solid transparent;
}
.tabs div:not(:first-child):hover
{
  border-left: 3px solid #1AC0C0;
  background-color: #EBEBEB;
}
.tabs a{
  display: block;
  padding:  0px;
  text-decoration: none;
}
.tabs div:first-child::before{
  content: "";
  position: relative;
  left: -5px;
  display: inline-block;
  width: 10px;
  height: 10px;
  background: url("../images/iframe/open.png") center / 100% no-repeat ;
}
iframe{
  border: none;
  display: block;
  width: 100%;
  height: 100%;
}
footer * {
  color: #fff;
}

footer {
  height: 300px;
  background-color: #505050;
  padding: 45px 20% 0 20%;
  position: relative;
}

.footer-main {
  display: flex;
  margin: 0 0 50px 0;
}

.footer-left,
.footer-right {
  flex: 1;
}
.footer-left img{
  margin-bottom: 15px;
}
.footer-right {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
}

.copy-right {
  position: absolute;
  bottom: 25px;
  left: 25%;
  width: 50%;
  justify-content: space-between;
}

.copy-right p{
  white-space: nowrap;
}

@media (max-width:1100px){
  footer{
    padding: 50px;
  }
}